The boxes are automatically picked up in a magazine of preformed boxes by a system of rotary suction cups. The cartons are automatically placed on the longitudinal conveyor chain. The bottom flaps of the case are formed, then the top flaps are folded open so that the operator or an automatic dispensing system can insert the products into the boxes. After the items are filled, glue is applied to the bottom and top flaps to ensure a completely closed and sealed package. The cartons are then unloaded from the horizontal cartoner by motorized side belts.